C.A.
I think it's just mostly time and practice that your little one needs :) And it can take a while. I think my daughter was 2 and still having some issues and I thought "sheesh, shouldn't she have this by now?" lol.
I think just helping him and showing him like you're doing will probably be fine :) And using utensils that are easy for him to handle that can hold on to the food :)